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INFORMATION SAFETY NOTICE: 912 Series Fuel Return Line

Incorporation of the mandatory fuel return line of ROTAX Engine Type 912 (Series)

The purpose of this Information Safety Notice is to inform ROTAX operators and owners about the mandatory fuel return line that is required to be incorporated into the aircraft's fuel system design.

As per the ROTAX installation manual, a Mandatory “restricted” fuel return line is to be incorporated within the aircraft's fuel system. The purpose of the fuel return line is to bleed off any vapors that may form within the fuel system that could cause vapor lock, resulting in a possible loss of engine power.

Please reference the latest ROTAX installation manual and check with the manufacturer of theaircraft to verify that a fuel return line has been incorporated within the design of the aircraft's fuel system.